BRIDGE is an important collaboration initiative within Horizon and more specifically high-TRL projects. Attempting to finetune research results and coordinate innovation strategies and frameworks, it manages to extract useful guidelines and contributions to energy system decarbonisation vision of the EU. ACCEPT will actively contribute to BRIDGE initiative and WP10 is dedicated in its larger part to this contribution. ACCEPT will provide its methodologies and conclusions to the activities of business modelling in BRIDGE and will utilise conclusions on regulatory frameworks and data management. Additionally, the ACCEPT large scale validation testbed -which extends to various cultural, geographical and socioeconomic contexts- will constitute a valuable source of conclusion extraction that ACCEPT will share with other projects. The project collaborative activities and participation in BRIDGE are monitored and reported in WP10 and more specifically in T10.1. The present deliverable is the third version out of four in total and includes the updated planning of relevant BRIDGE and synergies’ activities, an overview of the activities carried out to date under the framework of WP10 and key next steps for the next period (between now and the next version of the deliverable). Chapter 1 of the present document presents the scope and objectives of the task, the deliverable structure as well as its interdependencies with other activity lines of the project. It also includes a short section on the incremental changes and updates included in this report compared to the second version of the deliverable.Chapter 2 includes all the ACCEPT collaboration framework as it has been laid out from the Grant Agreement stage and as it has evolved through the first semester of the project. Within the chapter, the management of BRIDGE participation within the consortium is presented together with the cooperation perspective with other H2020 projects. The main workshops, conferences and events that constitute suitable collaboration platforms are mentioned, such as Sustainable Places, etc.Chapter 3 summarises the already assumed collaboration activities as conducted within M19-M30, including the BRIDGE General Assembly Meetings, Working Group discussions as well as knowledge sharing platforms established between ACCEPT and other projects of the call LC-SC3-EC-3-2020. A reference to planned activities for the next period is also presented.Finally, Chapter 4 includes the conclusions in the form of a brief summary of the document.